United States. Air Force. Cambridge Research Laboratories
Written in red ink on trace side.
overall: 1/2 in x 4 1/2 in x 6 in
Pentode and Gate module consists of a circuit board with three miniature vacuum tubes on the component side in a three sided orange frame. Handwritten text is written on the trace side: "II-OK | I has bad diode in "AND" D?? 11/??/5?"